Solveeit Logo

Question

Mathematics Question on mathematical reasoning

Negation of the Boolean statement (p ∨ q) ⇒ ((~ r) ∨ p) is equivalent to

A

p ∧ (~ q) ∧ r

B

(~ p) ∧ (~ q) ∧ r

C

(~p) ∧ qr

D

pq ∧ (~ r)

Answer

(~p) ∧ qr

Explanation

Solution

The correct answer is (C) : (p) ∧ qr
pq ⇒ (
rp)
≡ ~ (pq) ∨ (~ rp)
≡ (~ p ∧ ~ q) ∨ (p ∨ ~ r)
≡ [(~ pp) ∧ (~ qp)] ∨ ~ r
≡ (~ qp) ∨ ~ r
Its negation is ~ pqr.